The correct answer is A I believe
Answer:
pH = 5.7
Explanation:
pH = -log[H^+]
For HCl pH = -log[HCl] = - log [2.10 x 10⁻⁶ ] = 5.7
combustion is when you burn something in presence e of oxygen and the products will be mainly the CO2 and H2O
Kr look on periodic table it's krypton elements
There would be 67 left because you do
